US3205216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization process with ziegler catalysts
Assignee: Monsanto Co
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Filing: 1962-04-05
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Granted: 1965-09-07
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Expires: 1982-04-05
Abstract
No abstract record available.
Inventors
- 👤 Robert J Mcmanimie
- 👤 Edward H Mottus
- 👤 Harry G Hurst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:19
CPC Classifications
C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S526/00; Y10S526/907
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
85 words
METHOD WHICH COMPRISES FIRST PREPARING A CATALYST BY THE INTERACTION OF (A) AN ALUMINUM COMPOUND OF THE GENERAL FORMULA R2AIX WHEREIN R IS AN ALKYL, CYCLOALKYL OR ARYL RADICAL AND X IS HYDROGEN, HALOGOEN, OR AN ALKYL, CYCLOALKYL OR ARYL RADICAL, WITH (B) A METAL HALIDE SELECTED FROM THE GROUP CONSISTING OF THE CHLORIDES, BROMIDES AND IODIDES OF TITANIUM, THEN STORING SAME BELOW 10*C. FOR AT LEAST 5 HOURS, AND THEN POLYMERIZING AN ETHYLENICALLY UNSATURATED MONOMER POLYMERIZABLE THEREBY IN THE PRESENCE OF THE THUS-STORED CATALYST.
References Cited (Backward Citations)
US2824090A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |